Block Specification; Table 2-1 Typical Runtimes Of Fc 45 (Cycle Load Of As In Ms) - Siemens SIMATIC FC 45 Function Manual

2.1

Block specification

2.1
Block number:
Block name:
Symbolic name:
Family:
Work memory requirement:
Local data:
Version:
Called blocks:
Data block resources:
Bit memories used:
Counters used:
Registers used:
Call:
Table 2-1
315-2 DP
318-2 DP
416-2 DP
315-2 PN/DP
317-2 PN/DP
318-2 PN/DP
n = Amount in bytes of processed user data per read or write command
When a command processes more than 233 bytes of MDS data, n = 233 must always be
used in the table.
Remarks:
The times of the ASM for data communication with the data memories are described in the
MOBY manual for configuration, mounting and service.
FC 45
Function manual, Release 03/2006 , J31069-D0167-U001-A2-7618
Typical runtimes of FC 45 (cycle load of AS in ms)
S7-CPU Idle pass
1.9
0.13
0.1
FC 45
FC 45
"MOBY FC"
–
7260 bytes
132 bytes
2.6
SFC 58, SFC 59, SFC 20, SFC 21, SFC 1
MOBY Param = 300 bytes per channel
(defined via UDT 10)
none
none
AR1, AR2
cyclic
ASM Centrally in S7-300
Read MDS Write MDS
3.7 + n * 0.023 3.6 + n * 0.022
1 + n * 0.01 1.3 + n * 0.007
–
2.1 Block specification
Distributed ASM on
PROFIBUS
Read MDS
3.4
0.4
– 0.35
Description
Write MDS
3.6
0.45
0.38
2-3